this time span the population of Europe (including the present Soviei increased about sixfold, of Europe and European-occupied areas in t] ern Hemisphere and Oceania combined, about eightfold. The popul northern America increased about 160-fold and that of Latin Americ 14-fold.
During the same period the population of Asia increased by 1 fourfold. (This contrasts with what must have been a much less rapid earlier. The absolute increases in Asia were very large.) In Africa, po, merely doubled. It is clear that greatly accelerated growth occur: among the nations that first experienced modernization—the combin "revolutions," including the agricultural revolution, the commercia tion, the industrial revolution, the science revolution, and the techr revolution. Explosive population growth, the "vital revolution"—a growth without precedent in long-settled areas—did not approach proportions among the two thirds of mankind in the developing n; Asia, Latin America, and Africa until after World War I, and especiz World War II.
By the beginning of 1969 seven giant nations contained about thr of the world's peoples—some 2 billion. These nations are China with, 730 million, India with 520 million, the Soviet Union with 240 mil! United States with 200 million, Pakistan with 130 million, Indone 115 million, and Japan with 100 million.
If present fertility rates persist and mortality trends continue, we ulation could reach 7.5 billion in the next 30 years. With reasonab ance for reductions in fertility, world population could reach 7 billio century's end-perhaps the best estimate now possible on the assum no worldwide catastrophe such as a nuclear war. In the realm of the also, is a world population considerably in excess of 7.5 billion if th rate continues to increase as it has done throughout this century.
In the shorter run, using the United Nations "high variant" pa estimates giving a total of 7 billion by the turn of the century, work tion will approximate 4 billion by 1975, 4.6 billion by 1980, 5 b 1985, and 5.7 billion by 1990. Almost certainly, the number will ex billion by 2000 because of the age composition of the present po] Potential parents are much more numerous than the present rep cohorts. These numbers underline the magnitudes of the problems face the world in the immediate future as population numbers cor swell.
Between now and the century's end the developing nations are c